新型泵-热协同增压液氢加氢站系统㶲分析

doi:10.11949/0438-1157.20250367

化工学报 ›› 2025, Vol. 76 ›› Issue (10): 5390-5401.DOI: 10.11949/0438-1157.20250367

新型泵-热协同增压液氢加氢站系统㶲分析

翟庆伟¹(), 林锦辉², 李彦锋³, 韩东旭³(), 吴小华³, 王鹏³, 陈宇杰³, 宇波⁴

^1.北京工业大学机械与能源工程学院，北京 100124
^2.中国石油大学（北京）机械与储运工程学院，北京 102249
^3.北京石油化工学院机械工程学院，北京 102617
^4.长江大学石油工程学院，湖北武汉 430100

收稿日期:2025-04-09 修回日期:2025-05-21 出版日期:2025-10-25 发布日期:2025-11-25
通讯作者: 韩东旭
作者简介:翟庆伟（1993—），男，博士研究生，zhaiqingwei6@163.com
基金资助:
国家重点研发计划项目(2022YFB4002900)

Exergy analysis of novel pump-thermal synergistic pressurization liquid hydrogen refueling station system

Qingwei ZHAI¹(), Jinhui LIN², Yanfeng LI³, Dongxu HAN³(), Xiaohua WU³, Peng WANG³, Yujie CHEN³, Bo YU⁴

^1.School of Mechanical and Energy Engineering, Beijing University of Technology, Beijing 100124, China
^2.College of Mechanical and Transportation Engineering, China University of Petroleum, Beijing 102249, China
^3.School of Mechanical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China
^4.School of Petroleum Engineering, Yangtze University, Wuhan 430100, Hubei, China

Received:2025-04-09 Revised:2025-05-21 Online:2025-10-25 Published:2025-11-25
Contact: Dongxu HAN

摘要/Abstract

摘要：

为满足70 MPa氢燃料电池汽车加注的需求，液氢加氢站多采用增压汽化工艺，但该工艺对液氢泵要求较高。为推动核心设备国产化，提出了结合45 MPa液氢泵与热压缩的泵-热协同增压系统，以降低液氢泵出口压力，提高系统可行性及国产泵的适配性。基于泵-热协同增压液氢加氢站系统，构建了热力学和㶲分析模型。通过对核心组件、加注过程及全系统的研究，分析了液氢泵、压力容器、换热器和压力控制阀等部件在不同工况下的㶲损及㶲效率。结果表明：液氢泵的㶲效率随着出口温度和压力的增加而降低，45 MPa液氢泵的㶲效率优于90 MPa液氢泵；初始温度和压力对压力容器在泵-热增压过程中的㶲效率影响显著；通过优化调整部件及其进出口参数，系统部件的㶲效率均可保持在0.74以上。通过㶲分析揭示了新型液氢加氢站系统的能量利用情况，为系统优化和性能提升提供了依据。

关键词: 液氢加氢站, 热压缩, ?损, ?分析, 热力学模型, 液氢泵

Abstract:

Hydrogen fuel cell vehicles require a refueling pressure of 70 MPa, which necessitates that liquid hydrogen refueling stations incorporate both pressurization and vaporization processes. The demands of such refueling put significant pressure on liquid hydrogen pumps. This study proposes a pump-thermal synergistic pressurization system aimed at localizing core equipment. The system combines a 45 MPa liquid hydrogen pump with thermal compression to lower the pump's outlet pressure, thereby enhancing the system's feasibility and compatibility with domestic pumps. Based on the pump-heat synergistic pressurization liquid hydrogen refueling station system, a thermodynamic and exergy analysis model was constructed. Through the study of core components, refueling process and the whole system, the exergy loss and exergy efficiency of components such as liquid hydrogen pump, pressure vessel, heat exchanger and pressure control valve under different working conditions were analyzed. It has been observed that as the outlet temperature and pressure increase, the exergy efficiency of the liquid hydrogen pump decreases. Moreover, the 45 MPa liquid hydrogen pump exhibits a higher exergy efficiency compared to the 90 MPa pump. During the pump-thermal pressurization, the initial temperature and pressure significantly affect the exergy efficiency of the pressure vessel. By optimizing the component parameters, the exergy efficiency of all system components can be maintained above 0.74. This study highlights the importance of energy utilization in the novel liquid hydrogen refueling station system through exergy analysis, providing a foundation for further system optimization and performance enhancement.

Key words: liquid hydrogen refueling station, thermal compression, exergy destruction, exergy analysis, thermodynamic model, liquid hydrogen pump

中图分类号:

TK 91

翟庆伟, 林锦辉, 李彦锋, 韩东旭, 吴小华, 王鹏, 陈宇杰, 宇波. 新型泵-热协同增压液氢加氢站系统㶲分析[J]. 化工学报, 2025, 76(10): 5390-5401.

Qingwei ZHAI, Jinhui LIN, Yanfeng LI, Dongxu HAN, Xiaohua WU, Peng WANG, Yujie CHEN, Bo YU. Exergy analysis of novel pump-thermal synergistic pressurization liquid hydrogen refueling station system[J]. CIESC Journal, 2025, 76(10): 5390-5401.

图/表 7

图1 泵-热协同增压液氢加氢站系统

Fig.1 Schematic of liquid hydrogen refueling station with pump-thermal synergistic pressurization system

图2 放气过程中压力容器内氢气温度的仿真结果与实验结果对比

Fig.2 Comparison of hydrogen temperature inside the pressure vessel during the venting process by the simulation and the experiment

图3 模型与H2Fills软件及实验结果在FCEV储氢罐温升与质量流量的对比

Fig.3 Comparison of temperature rise in the FCEV tank and mass flow rate by the present model with H2Fills software and experimental results

图4 液氢泵在不同出口参数下的㶲损及㶲效率变化

Fig.4 Variations of exergy destruction and exergy efficiency of the liquid hydrogen pump under different outlet parameters

图5 泵-热协同增压过程在不同压力容器参数下的㶲损及㶲效率变化

Fig.5 Variations of exergy destruction and exergy efficiency during the pump-thermal synergistic pressurization process under different pressure vessel parameters

图6 不同环境温度下氢气加注过程中核心组件的㶲损失和㶲效率变化

Fig.6 Variations of exergy destruction and exergy efficiency of key components during the hydrogen refueling process under different ambient temperatures

图7 全系统运行过程中核心部件㶲损所占比例及优化调整前后㶲效率

Fig.7 Proportions of exergy loss in key components during full system operation and comparison of exergy efficiency before and after optimization

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新型泵-热协同增压液氢加氢站系统㶲分析

Exergy analysis of novel pump-thermal synergistic pressurization liquid hydrogen refueling station system

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